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This paper presents a generalization of well-known phase shift oscillator based on single CCII into the fractional order domain. The general state matrix, characteristic equation and design equations are presented. The general oscillation frequency, condition and the phase difference between the oscillatory outputs are introduced in terms of the fractional order parameters. These parameters add extra...
This paper introduces a study to generalize the design of a continuous time filters into the fractional order domain. The study involves inverting and non-inverting filters based on CFOA where three responses are extracted which are high-pass, band-pass and low-pass responses. The proposed study introduces the generalized formulas for the transfer function of each response with different fractional...
A new differential Voltage-Controlled Delay Unit (VCDU) is proposed. The VCDU converts an input voltage into a pulse delay, and delivers it to a Time-to-Digital Converter (TDC) which outputs a digital word. Both circuits form a Time-Based Analog-to-Digital Converter (ADC). In scaled CMOS technology, the Time-Based ADC is a substantial block in designing Software Defined Radio (SDR) receivers, as it...
This paper generalizes the concept of the oscillators based on the operational transresistance amplifier (OTRA) into the fractional order domain. The added parameter in the fractional-order design is an important in practical and can model the non-ideality of the conventional capacitors. The general condition and frequency of oscillation have been derived analytically in terms of the circuit components...
Threshold voltage cancellation (Vt cancellation) scheme is applied to cancel the threshold drop associated with the diode-connected device and improve charge pump performance. Applying this scheme depends on generating control signals from the next stage so it cannot be applied on the output stage. In this paper Vt cancellation is applied for the output stage of modified Pelliconi pump. This is done...
A digitally programmable lossless floating inductor realization circuit is proposed. The proposed block uses current differential amplifier as an active block and the programmability is achieved through array of capacitors each one is connected to a switch, according to the logic 1 or 0 applied to the switch gate; the array size change and the programmability is achieved. The presented circuit realizes...
This paper exhibits the generation of an operational transconductance amplifier and capacitor (OTA-C) arbitrary-phase-shift sinusoidal oscillator (APSO) for an order for various advanced applications. A new th-order quadrature oscillator (QO) is obtained via the algebraic quadrature manipulations of an oscillatory characteristic equation. Based on a phase shift transformation from a quadrature,...
A new analytical synthesis method for high order multiple output current-mode general filter structure is described. This method is based on the decomposition of the n-th order general transfer function into n-first order equations plus one equation for the realization of the n-th output current. Based on this method, a proposed n-th order current-mode simultaneous output filter structure is presented...
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